Question

我有一些来自查询的数字，我必须使用json_encode函数表示。一切正常但输出看起来像这样

{ "label": "man", "data":[["0","1.13"], ["1","1.38"], ["2","1.87"], ["3","1.12"], ["4","1.28"]]}

所以我认为问题是所有数字都存储为字符串。是否有转换所有元素的函数？

Answer 1

您可能希望将JSON_NUMERIC_CHECK添加到json_encode函数中：

   json_encode($array, JSON_NUMERIC_CHECK);

Answer 2

您可以使用以下函数获取变量的整数或浮点值：

echo (integer)$variable;
echo (float)$variable;

Answer 3

<?php

$json = '{ "label": "man", "data":[["0","1.13"], ["1","1.38"], ["2","1.87"], ["3","1.12"], ["4","1.28"]]}';

$structure = json_decode($json, true);
$newData = $structure['data'];

for ($x=0;$x<count($newData);$x++):
    for ($i=0;$i<count($newData[$i]);$i++):
        $newData[$x][$i] = (float)$newData[$x][$i];
    endfor;
endfor;

$structure['data'] = $newData;
print json_encode($structure);

新结果：

{"label":"man","data":[[0,1.13],[1,1.38],[2,1.87],[3,1.12],[4,1.28]]}

将数组元素从字符串转换为数字

3 个答案: